Add NetLog support to UDP sockets.

chrome/browser/net/passive_log_collector.cc

Index: chrome/browser/net/passive_log_collector.cc
===================================================================
--- chrome/browser/net/passive_log_collector.cc	(revision 106059)
+++ chrome/browser/net/passive_log_collector.cc	(working copy)
@@ -80,6 +80,7 @@
   trackers_[net::NetLog::SOURCE_DNS_TRANSACTION] = &dns_transaction_tracker_;
   trackers_[net::NetLog::SOURCE_ASYNC_HOST_RESOLVER_REQUEST] =
       &async_host_resolver_request_tracker_;
+  trackers_[net::NetLog::SOURCE_UDP_SOCKET] = &udp_socket_tracker_;
   // Make sure our mapping is up-to-date.
   for (size_t i = 0; i < arraysize(trackers_); ++i)
     DCHECK(trackers_[i]) << "Unhandled SourceType: " << i;
@@ -724,3 +725,33 @@
   }
   return ACTION_NONE;
 }
+
+//----------------------------------------------------------------------------
+// UDPSocketTracker
+//----------------------------------------------------------------------------
+
+const size_t PassiveLogCollector::UDPSocketTracker::kMaxNumSources = 200;
+const size_t PassiveLogCollector::UDPSocketTracker::kMaxGraveyardSize = 15;
+
+PassiveLogCollector::UDPSocketTracker::UDPSocketTracker()
+    : SourceTracker(kMaxNumSources, kMaxGraveyardSize, NULL) {
+}
+
+PassiveLogCollector::UDPSocketTracker::Action
+PassiveLogCollector::UDPSocketTracker::DoAddEntry(
+    const ChromeNetLog::Entry& entry,
+    SourceInfo* out_info) {
+  if (entry.type == net::NetLog::TYPE_UDP_BYTES_SENT ||
+      entry.type == net::NetLog::TYPE_UDP_BYTES_RECEIVED) {
+    return ACTION_NONE;
+  }
+
+  AddEntryToSourceInfo(entry, out_info);
+
+  if (entry.type == net::NetLog::TYPE_SOCKET_ALIVE &&
+      entry.phase == net::NetLog::PHASE_END) {
+    return ACTION_MOVE_TO_GRAVEYARD;
+  }
+
+  return ACTION_NONE;
+}